How severe is CVE-2025-3985?

CVE-2025-3985 has a CVSS 3.x base score of 2.7, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2025-3985 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-3985?

CVE-2025-3985 affects Apereo Central Authentication Service. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-3985?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-3985 have an EU (EUVD) identifier?

Yes. CVE-2025-3985 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12427.

When was CVE-2025-3985 published?

CVE-2025-3985 was published on 2025-04-27 and last updated on 2026-06-17.

CVE-2025-3985

CVE-2025-3985 is a low-severity vulnerability in Apereo Central Authentication Service with a CVSS 3.x base score of 2.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: Low (CVSS 3.x base score 2.7)
CVSS v2: 3.3
CVSS v4: 5.1
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-12427
Weakness: CWE-400
Affected product: Apereo Central Authentication Service
Published: 2025-04-27
Last modified: 2026-06-17

Description

A vulnerability was found in Apereo CAS 5.2.6. It has been classified as problematic. This affects the function ResponseEntity of the file cas-5.2.6\webapp-mgmt\cas-management-webapp-support\src\main\java\org\apereo\cas\mgmt\services\web\ManageRegisteredServicesMultiActionController.java. The manipulation of the argument Query leads to inefficient regular expression complexity. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2025-3985?: A vulnerability was found in Apereo CAS 5.2.6. It has been classified as problematic. This affects the function ResponseEntity of the file cas-5.2.6\webapp-mgmt\cas-management-webapp-support\src\main\java\org\apereo\cas\mgmt\services\web\ManageRegisteredServicesMultiActionController.java. The manipulation of the argument Query leads to inefficient regular expression complexity. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2025-3985?: CVE-2025-3985 has a CVSS 3.x base score of 2.7, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2025-3985 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-3985?: CVE-2025-3985 affects Apereo Central Authentication Service. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-3985?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-3985 have an EU (EUVD) identifier?: Yes. CVE-2025-3985 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12427.
When was CVE-2025-3985 published?: CVE-2025-3985 was published on 2025-04-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:apereo:central_authentication_service:5.2.6:*:*:*:*:*:*:*

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